Nut-lock.



F. D. BOZARTH NUT LOCK.

APPLIOATION FILED AUG.23,1909.

1,029,389, Patented June 11,1912.

a fl'px 314 vermin:

UNITED STATES PATENT OFFICE.

FRANK D. BOZARTH, 0F WILLIAMSBURG, VIRGINIA, ASSIGNOR OF ONE-HALF TO L.W. BROWN, OF BERKLEY, VIRGINIA.

NUT-LOCK.

Specification of Letters Patent.

Patented June 11, 1912.

Application filed August 23, 1909. Serial No. 514,285.

To all whom it may concern.'

Be it known that I, FRANK D. BozARTH, a citizen of the United States,residing at Williamsburg, in the county of James City and State ofVirginia, have invented certain new and useful Improvements inNut-Locks; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to nut locks, and has for an object to provide alock of new and improved construction embodying features of reliability,economy and security.

A further object of the invention is to provide a threaded bolt havingrecesses formed in the threaded surface and a nut provided withansimproved form of bendable tongue integral with the nut and adapted tobe bent into the recesses in the threads.

With these and other objects in view, the invention comprises certainnovel constructions, and combinations of parts, as wil] be hereinafterfully described and claimed.

In the drawings :Figure 1 is a conventional view of a rail joint andlish plate with the improved bolt and nut lock associated therewith.Fig. 2 is a transverse sectional view taken on line 2 2 of Fig. 1. Fig.3, is a transverse View similar to Fig. 2 except that the slots areformed entirely through the bolt instead of simply as key-ways and thebendable tongues are not bent into the recess. Fig. 4 is a perspectiveview of one of the nuts. Fig. 5 is a perspective view of the threadedend of the bolt. Fig. .6 is a .perspective view of a slightly modifiedform of nut. Fig. 7 is a View in end elevation of a belt and nut showingthe bolt slightly modified.

Like characters of reference designate corresponding parts throughoutthe several views. v

While the improved nut lock which forms the subject-matter of thepresent application is adapted to be associated with rails as 10 andfish plates as 11 it is to be understood that it is equally satisfactoryfor use in other ways, and is here shown in such relation only forillustration.

The bolt upon which the nut is employed is shown at 12 in approximatelythe usual and ordinary form threaded at one end as indicated at 13 andwith longitudinal recesses formed in the sides of the bolt in anyapproved number. In the form as shown at Figs. 2 and 5 the recesses areformed as tapered key-ways 14 deeper at the end of the bolt and taperingto disappearance at a distance back from the end, it not being necessaryto extend the key-way the entire length of the threads.

The nut employed as shown at 15 may be square as shown or of any shapeordinarily employed and is provided with integral upstanding tongues 16shown at Fig. 4 as threaded on their inner side but such threading isonly as a convenience in manufacture and is not believed to be necessaryto the proper operation of the lock.

As shown particularly at Figs. 2, 3 and 4, the inner corner of each ofthe bendable tongues is chamfered as shown at 17 so that when the tongueis bent into the locking recess a V-shaped cavity is formed as at 18 inFig. 1 into which a pointed or edge punch, nail or other article may beinserted to drive the bendable tongue outwardly to permit the removal ofthe nut.

Instead of forming the nut with the bendable tongues upstanding abovethe normal surface as shown at Fig. 4 the tongues as shown at 16 may beformed flush with the surface of the nut by sawing slits 19 through thesurface of the nut proper and the tongues 16 are bent inwardly int-oengagement with the recesses of the bolt as de scribed relative to theupstanding tongues 16.

Instead of forming the recesses as keyways shown at 14 in Fig. 5 theymay also be formed as slots extendlng entirely through the bolt as atFig. 3 and in this case the tongues 16 will be bent over into the slotand, ot' course, will not come into engagement with the bottom of theslot as is the case in the embodiment shown at Fig. 5. Also with thebolt constructed as shown at Fig. 7 to remove the nut a punch may beinserted against the inner side of the tongue 16 and by hammering thetongue Will be bent outwardly.

The great advantage of the present structure is that the locking of the-nut and bolt may be accomplished without any Vspecial tools for thepurpose and by the ordinary unskilled laborer. In use in railroad track.construction or repair, for instance, the nut will be screwed up untilsufficiently tight upon the bolt and until the tongues 16 register withthe recesses 14 when the section hand or laborer may seat the tongues inthe recesses by the use of the spike-man1 or hammer which he has in hishand or available and without the use of any punch or other tools. Itwill thus be seen that the device considered from the point of operationis thoroughly simple and one Which can be used successfully by anyperson no matter how unskilled. Considered from the point of economy ofmanufacture the nut can be stamped or otherwise formed with the tongues16 thereon at the time of manut facture and threaded in the usual andordinary manner Without much, if any, unusual expense, and the key-Waysin the sides of the bolts may be formed exactly in the usual manner.After the nut has been removed by bending oaok the tongue 16 asdescribed it may be again employed as the tongues are capable of beingbent several times and still perform their function. In fact the nut maybe used until the tongues become broken.

What I claim is 2# A nut look comprising a threaded bolt having alongitudinal furrow formed therein transversely of the threads and withsubstantially radial sides, of a. nut having a bendable tongueprojecting outwardly from one side thereof, With one edge of said tongueregistering With the bore 0f the nut and the opposite edge extendingsubstantially from the edge of the nut and in position to be struck by ahammer to be driven into the furrow of the bolt.

ln testimony whereof I aix my signature in presence of two witnesses.

l FRANK D. BOZARTH. lVitnesses:

W. G. BRINKLEY, C. HARRIS.

